/*
 * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.sabayframework.mem.impl;

import java.util.concurrent.atomic.AtomicBoolean;

import org.sabayframework.mem.BigBuffer;


public abstract class AbstractBigBufferAllocator  implements BigBufferAllocator
{
    private final AtomicBoolean closed = new AtomicBoolean( false );

    protected final boolean isClosed()
    {
        return closed.get();
    }

    protected final void setClosed( final boolean closed )
    {
        this.closed.set( closed );
    }

    protected static Integer getHash( final BigBuffer buffer )
    {
        return Integer.valueOf( System.identityHashCode( buffer ) );
    }
    
	public BigBuffer allocate(BigBuffer data){
		if(data != null && data.capacity() > 0){
			BigBuffer copy = allocate(data.remaining());
			if(copy!=null) copy.put(data);
			return copy;
		}
		return null;
	}

	@Override
	protected void finalize() throws Throwable {
		super.finalize();
		close();
	}

}